Key storage device



FIG. 1 is a perspective view of a key storage device showing the claimeddesign;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a bottom plan view thereof.

CLAIM The ornamental design for a key storage device, as shown anddescribed.